Vibrating mechanism



March 15, 1932.

L. S. CHADWICK VIBRAT ING MECHANISM Filed June 25, 1928 4 Sheets-Sheet 1I NVENT'OR abtoznuw Match 15, 1932. 5- c Dw K 1,849,706

VIBRATING MECHANI SM Filed June 25, 1928 4 Sheets-Sheet 2 Jrvuentozattoawu s March 15, 1932.. L. S. CHADWICK YIBRA'TING MECHANISM 4Sheets-Sheet 3 Filed June 25, 1928 March 15, 1932. w 1,849,706

VIBRATING MECHANISM Filed June 25, 1928 4 Sheets-Sheet 4 IIIIIIIIII/j;

Patented Mar. 15, 1932 P A rmrror Fig.5

LEE s. onnnwrcx, or SHAKER HEIGHTS, 01110 vinzaA'rme MEcHANIsMApplication filed June 25, 1928; Serial no. 288,008.

This invention relates to improvements in vibrating machines belongingto the same general class as those disclosed in my copendingapplications Serial Nos. 267,828 and 267 8 829,, filed April 6, 1928.

Machines of the class referred to involve applicator band-s or-strapsthat are adapted to be engaged about the part of the body that it isdesired to treat, and mechanism for vibrating the bands or straps byimparting to themin rapid succession quick jerks. in oppositedirections. I 1

The primary purposeof my present invention is to provide a machine ofthe above ments to'which the ends of the applicator band or strap areconnected may be con'veniently adjusted to obtain any length strokedesired within a relatively wide range and preferably while themachineis in operation.

Other objects of the invention are to provide a machine of the aforesaidclass that is very eliicient,

act, and is relatively simple of construction.

The

vention in detail, are attained in the embodiment illustrated in theaccompanying drawtain the maximum stroke of the applicator; Fig. 2 is asimilar view of the machine adjusted to produce the minimum stroke; Fig.3 is a front elevation of the machine; Fig. 4 is a sectional sideelevation, the plane of section being indicated by the line 4-4 of 3;Fig. 5 is a plan view of the machine; and

class wherein the throw of the vibrating eleis strong and durable, iscomforegoing objects, with others thatwill appear as I proceed todescribe the in- I ings wherein Fig. 1 is a side elevation ofmy improvedvibrating machine adjusted to ob- I ing structure that isa'dapted to besecured, by fastening means 2, to a wall or the like, and at its forwardend is provided with a transversebore into the ends of which are fittedbushings 3 and 45, said bushings having en- 1 larged outenends, as bestshown in Fig. .6. J ournaled within the bushings 3 and leis a shaft '5to the opposite ends of which are keyed or otherwise fastened crankdisks 6 and I 7, theformer having a relatively wide fiange thatisprovided with circumferential grooves 8 and 9 of differing diameterssoras'to effect of this disk a pulley of the cone type. A similar butsmaller pulley 10 is fastened to the 7 armature shaft of an electricmotor 12. This 'eo motor i suspended from a plate 13 that has itsrear'end pivoted at l t to the underside of the supporting structure 1and its forward end adjustably connected to the correspond ing end ofthe supporting structureby means of a screw 15 to which a knurled nut 16is applied, and by adjusting this nut along the screw the motor may bemoved toward and fromthe supporting structure for the purpose ofregulating the tension of a belt 17 that is engaged about the aforesaidpulleys. Obviously the speed of the machine may be changed byshiftingthe belt 17 from one set of grooves of said pulleys to the other;

outer ends of the bushings 3 and 4 are the hub portions 19 of a yoke 20,the side branches 21of which extend radially from the hubs 19 andterminate at their outer ends in laterally' extending bosses 22 thatsupport a 50 shaft 23. v

J ournaled on the ends of the shaft 23 are vibrating elements 25 thatare in the nature of casings having inner open sides disposed adj acentthe crank disks 6 and 7 so that crank 85 pins 26that are carried by saiddisks extend into the cavities of the vibrating-elements.

Also enclosed by these elements are connecting rods 27that are journaledat one of their ends on the crank pins 26 and at their other Mountedforoscillation. upon the enlarged I ends on pins 28 that are secured withinlaterally spaced bosses formed in the vibrating elements 25. Knobs 30are carried by the vibrating elements 25 for the attachment of the endsof the vibrating band or strap, inclicated in dot-and-dash lines at 31in Fig. 5. The parts enclosed by the vibrating elements are intended tobe kept well lubricated, and one reason for making said elements in theform of casings that enclose said parts is to prevent the lubricant frombeing thrown when the machine is in action.

The yoke 20 incorporates a hollow radial boss 33 within which isthreaded the shank of a handle 3a, the inner end of said shank engaginga plunger 35 that occupies the inner end of the bore of the boss 33 andis notched to embrace the face of a quadrant 36 whose hub surrounds theenlarged end of the bushing 3 adjacent the supporting structure 1 and issecured to the latter by screws 37, as best shown in Fig. 6. Stops 38are located at the ends of the quadrant to limit the swinging movementof the yoke 20.

In the use of the machine, the applicator band or strap, with its endsapplied to the knobs 30, is engaged about the part of the body that isto be treated, and by the closing of a suitable switch (not shown)current is supplied to the motor 12. With the motor thus energized, therotation of its shaft is transmitted. through the pulley 10, belt 17 andthe pulley constituted of the crank disk 6, to the shaft 5. As the shaft5, and consequently the crank disks 6 and 7, rotate, the vibratingelements 25 are oscillated on the shaft 23 through the intervention ofthe connecting rods 27. As will be seen by reference to Fig. 1, themaximum stroke is imparted to the vibrating band or strap when the yokeoccupies a vertical position, the length of such stroke being indicatedby the line m. To shorten the stroke of the applicator band or strap,the handle 34 is turned to release the pressure of the plunger 35 on thequadrant 36', and, by means of the handle, the yoke 20 is swung toward ahorizontal position. When the yoke is swung to the horizontal position,as illustrated in Fig. 2, the stroke of the applicator band or strap isat its minimum, as indicated by the line 'y in Fig. 2. While the actualstroke of the knobs 30 is constant, the movement imparted in asubstantially horizontal direction to the applicator strap or banddepends upon the angular adjustment of the yoke 20 and of the vibratingelements 25. Any desired length of stroke within the range between theminimum and maximum may be obtained by an adjustment of the yoke betweenits extreme positions, and it is'adapted to be held in any position towhich it is adjusted by screwing the shank of the handle 34 inwardly topress the plunger 35 against the quadrant 36.

Having thus described my invention, what I claim is 1. In a vibratingmachine, the combination of a vibrating element, a pivotal supporttherefor, a crank action for imparting vibratory motion to said element,and an applicator connected to the element, said pivotal support beingadjustable substantially circumferentially of the rotating axis of thecrank, and means for holding said pivotal support in various positionsto which it is adjusted.

2. In a vibrating machine, the combination of a crank, a membersupported for oscillation substantially on the rotating axis of thecrank, means for holding said member in various positions of adjustmentabout said axis, a vibrating element pivoted to said member, anapplicator connected to the vibrating element, and a connecting rodhaving one of its ends j ournaled on the crank and its opposite endpivotally connected to the vibrating member.

3. In a vibrating machine, the combination of a crank, a membersupported for oscilla-z tion substantially on the rotatingaxis of thecrank, a quadrant concentric with said rotating axis, means for securingsaid member to said quadrant in various adjusted positions,

a vibrating element pivoted to; said member,=1

an applicator connected to the vibrating element, and drivingconnections between the crank and the said element.

4. In a vibrating machine, the combination of a crank, a membersupported for oscillation substantially on the rotating axis of thecrank, a vibrating element pivoted to said member, an applicatorconnected to the vibrating element, driving connection between the crankand said element, a handle on said member by means of which the same maybe oscillated, and means adapted to be operated by said handle forsecuring the member in any position to which it may be adjusted.

5. In a vibrating machine, the combination". v of a supportingstructure, a shaft journaled therein, cranks secured to the shaft, amember supported for oscillation substantially on the axis of the shaft,means for maintainlng said member in any position to which it may beadjusted, vibrating elements pivotally supported by said member adjacentthe cranks, driving connections between each crank and the correspondingvibrating element, and an applicator band having its opposite endsconmember, means for securing the member to said quadrant in the variouspositions to which it may be adjusted, vibrating elements pivot-ed tothe member adjacent the cranks, driving connections between each crankand the corresponding vibrating element, and an applicator band havingits opposite ends connected to the respective vibrating elements.

In testimony whereof, I hereunto afliX my signature.

LEE S. CHADWICK.

